Craniomandibular Osteopathy

• Mainly West Highland White Terriers and Scottish Terriers, also other breeds
• Arises at 4-8 months of age
• Clinical signs:
  • Discomfort during eating
• Grossly:
  • Proliferative changes in mandible, occipital and temporal bones, including tympanic bullae
  • Bilaterally symmetrical
  • Lesions may also occur in the limbs - less common
• Histologically:
  • Osteogenesis and resorption of periosteum, endosteum and trabeculae of the mandible
  • Variable infiltration of lymphocytes, neutrophils and plasma cells
  • Mosaic appearance
• Intermittent progressive course
• Lasts up to seceral months
• Usualluy self-limiting and non-fatal, however, discomfort may be so severe as to justify euthanasia